Cleaning wipe

ABSTRACT

The present invention relates to a cleaning wipe which is a water insoluble substrate impregnated with a cleaning composition containing a cellulosic polymer.

RELATED APPLICATION

[0001] This application is a continuation in part application of U.S.Ser. No. 10/283,669 filed Oct. 30, 2002 which in turn is a continuationin part application of U.S. Ser. No. 10/086,165 filed Feb. 27, 2002which in turn is a continuation in part application of U.S. Ser. No.10/008,715 filed Nov. 13, 2001.

FIELD OF THE INVENTION

[0002] The present invention relates to a cleaning wipes for dishwasher,fabrics, hair, human skin and teeth which is a single or multi layerfabric substrate which has been impregnated with a liquid cleaningcomposition.

BACKGROUND OF THE INVENTION

[0003] The patent literature describes numerous wipes for body cleaning,oral cleaning, fabric cleaning, hair cleaning and cleaning of hardsurfaces but none describe wipes for cleaning teeth, hair, human skin,fabrics or cleaning dishware flatware, pots and pans. U.S. Pat. Nos.5,980,931, 6,063,397 and 6,074,655 teach a substantially dry disposablepersonal cleansing product useful for both cleansing and conditioningthe skin and hair. U.S. Pat. No. 6,060,149 teaches a disposable wipingarticle having a substrate comprising multiple layers.

[0004] U.S. Pat. Nos. 5,756,612; 5,763,332; 5,908,707; 5,914,177;5,980,922 and 6,168,852 teach cleaning compositions which are inverseemulsions.

[0005] U.S. Pat. Nos. 6,183,315 and 6,183,763 teach cleaningcompositions containing a proton donating agent and having an acidic pH.U.S. Pat. Nos. 5,863,663; 5,952,043; 6,063,746 and 6,121,165 teachescleaning compositions which are oil in water emulsions.

SUMMARY OF THE INVENTION

[0006] A single use cleaning wipe for dishwashing application comprisesa water insoluble substrate, impregnated with a cleaning compositioncontaining at least one surfactant, a cellulosic polymer and water.

[0007] The liquid cleaning compositions of this invention are not anemulsion and do not contain potassium sorbate, a polysaccharide polymer,a polycarboxylate polymer, polyvinyl alcohol polymer,polyvinylpyrrolidone polymer or methyl vinyl ether polymer.

DETAILED DESCRIPTION OF THE INVENTION

[0008] The present invention relates to a cleaning wipe for dishware,flatware, pots and pans which is not moist and does not feel wet to theuser and is activated by contact with water and comprises approximatelyby weight:

[0009] (a) 5% to 80% of a cleaning composition which comprisesapproximately by weight:

[0010] (i) 0.5% to 12% of a water soluble cellulosic polymer selectedfrom the group consisting of methyl cellulose and hydroxypropyl methylcellulose and mixtures thereof;

[0011] (ii) 15% to 50% of at least one surfactant selected from thegroup consisting of alkali metal salts of a fatty acids, ethoxylatednonionic surfactants, amine oxide surfactants, alkyl polyglucosidesurfactants, zwitterionic surfactants, anionic surfactants and C₁₂-C₁₄fatty acid monoalkanol amides and mixtures thereof;

[0012] (iii) 0 to 6%, more preferably 0.05% to 3% of a perfume; and

[0013] (iv) the balance being water, wherein the composition does notcontain potassium sorbate, a polysaccharide polymer, a polycarboxylatepolymer, polyvinyl alcohol polymer, polyvinylpyrrolidone polymer ormethyl vinyl ether polymer; and

[0014] (b) 20% to 95% of a water insoluble substrate, wherein said waterinsoluble substrate comprises a top layer of coarse fibers, an absorbentcenter layer which is cellulosic paper and a bottom layer of finefibers, wherein the layers are bonded together and the center layer isimpregnated with said cleaning composition.

[0015] The anionic surfactants which may be used in the detergent filmof this invention are water soluble and include the sodium, potassium,ammonium and ethanolammonium salts of C₈-C₁₈ alkyl sulfates such aslauryl sulfate, myristyl sulfate and the like; linear C₈-C₁₆ alkylbenzene sulfonates; C₁₀-C₂₀ paraffin sulfonates; alpha olefin sulfonatescontaining about 10-24 carbon atoms; C₈-C₁₈ alkyl sulfoacetates; C₈-C₁₈alkyl sulfosuccinate esters; C₈-C₁₈ acyl isethionates; and C₈-C₁₈ acyltaurates. Preferred anionic surfactants are the water soluble C₁₂-C₁₆alkyl sulfates, the C₁₀-C₁₅ alkylbenzene sulfonates, the C₁₃-C₁₇paraffin sulfonates and the alpha C₁₂-C₁₈ olefin sulfonates.

[0016] The higher alkyl mononuclear aromatic sulfonates, such as thehigher alkylbenzene sulfonates containing 9 to 18 or preferably 9 to 16carbon atoms in the higher alkyl group in a straight or branched chain.A preferred alkylbenzene sulfonate is a linear alkylbenzene sulfonatehaving a higher content of 3-phenyl (or higher) isomers and acorrespondingly lower content (well below 50%) of 2-phenyl (or lower)isomers, such as those sulfonates wherein the benzene ring is attachedmostly at the 3 or higher (for example 4, 5, 6 or 7) position of thealkyl group and the content of the isomers in which the benzene ring isattached in the 2 or 1 position is correspondingly low. Preferredmaterials are set forth in U.S. Pat. No. 3,320,174, especially those inwhich the alkyls are of 10 to 13 carbon atoms.

[0017] Examples of suitable other sulfonated anionic detergents are thewell known. The paraffin sulfonates may be monosulfonates ordi-sulfonates and usually are mixtures thereof, obtained by sulfonatingparaffins of 10 to 20 carbon atoms. Preferred paraffin sulfonates arethose of C₁₂₋₁₈ carbon atoms chains, and more preferably they are ofC₁₄₋₁₇ chains. Paraffin sulfonates that have the sulfonate group(s)distributed along the paraffin chain are described in U.S. Pat. Nos.2,503,280; 2,507,088; 3,260,744; and 3,372,188; and also in GermanPatent 735,096. Such compounds may be made to specifications anddesirably the content of paraffin sulfonates outside the C₁₄₋₁₇ rangewill be minor and will be minimized, as will be any contents of di- orpoly-sulfonates.

[0018] The C₈₋₁₈ ethoxylated alkyl ether sulfate surfactants have thestructure

R—(OCHCH₂)_(n)OSO₃ ^(M) ⁻⁺

[0019] wherein n is about 1 to about 22 more preferably 1 to 3 and R isan alkyl group having about 8 to about 18 carbon atoms, more preferably12 to 15 and natural cuts, for example, C₁₂₋₁₄ or C₁₂₋₁₆ and M is anammonium cation or a metal cation, most preferably sodium.

[0020] The ethoxylated alkyl ether sulfate may be made by sulfating thecondensation product of ethylene oxide and C₈₋₁₀ alkanol, andneutralizing the resultant product. The ethoxylated alkyl ether sulfatesdiffer from one another in the number of carbon atoms in the alcoholsand in the number of moles of ethylene oxide reacted with one mole ofsuch alcohol. Preferred ethoxylated alkyl ether polyethenoxy sulfatescontain 12 to 15 carbon atoms in the alcohols and in the alkyl groupsthereof, e.g., sodium myristyl (3 EO) sulfate.

[0021] Ethoxylated C₈₋₁₈ alkylphenyl ether sulfates containing from 2 to6 moles of ethylene oxide in the molecule are also suitable for use inthe invention compositions. These detergents can be prepared by reactingan alkyl phenol with 2 to 6 moles of ethylene oxide and sulfating andneutralizing the resultant ethoxylated alkylphenol.

[0022] The C₁₂-C₂₀ paraffin sulfonates may be monosulfonates ordi-sulfonates and usually are mixtures thereof, obtained by sulfonatingparaffins of 10 to 20 carbon atoms. Preferred paraffin sulfonates arethose of C₁₂₋₁₈ carbon atoms chains, and more preferably they are ofC₁₄₋₁₇ chains. Paraffin sulfonates that have the sulfonate group(s)distributed along the paraffin chain are described in U.S. Pat. Nos.2,503,280; 2,507,088; 3,260,744 and 3,372,188 and also in German Patent735,096. Such compounds may be made to specifications and desirably thecontent of paraffin sulfonates outside the C₁₄₋₁₇ range will be minorand will be minimized, as will be any contents of di- orpoly-sulfonates.

[0023] The present invention can also contain alpha olefin sulfonates,including long-chain alkene sulfonates, long-chain hydroxyalkanesulfonates or mixtures of alkene sulfonates and hydroxyalkanesulfonates. These alpha olefin sulfonate surfactants may be prepared ina known manner by the reaction of sulfur trioxide (SO₃) with long-chainolefins containing 8 to 25, preferably 12 to 21 carbon atoms and havingthe formula RCH═CHR₁ where R is a higher alkyl group of 6 to 23 carbonsand R₁ is an alkyl group of 1 to 17 carbons or hydrogen to form amixture of sultones and alkene sulfonic acids which is then treated toconvert the sultones to sulfonates. Preferred alpha olefin sulfonatescontain from 14 to 16 carbon atoms in the R alkyl group and are obtainedby sulfonating an a-olefin.

[0024] The long chain fatty acids are the higher aliphatic fatty acidshaving from about 8 to 22 carbon atoms, more preferably from about 10 to20 carbon atoms, and especially preferably from about 12 to 18 carbonatoms, and especially preferably from 12 to 18 carbon atoms, inclusiveof the carbon atom of the carboxyl group of the fatty acid. Thealiphatic radical may be saturated or unsaturated and may be straight orbranched. Straight chain saturated fatty acids are preferred. Mixturesof fatty acids may be used, such as those derived from natural sources,such as tallow fatty acid, coco fatty acid, soya fatty acid, mixtures ofthese acids, etc. Stearic acid and mixed fatty acids, e.g. stearicacid/palmitic acid, are preferred.

[0025] Thus, examples of the fatty acids include, for example, decanoicacid, dodecanoic acid, palmitic acid, myristic acid, stearic acid,behenic acid, oleic acid, eicosanoic acid, tallow fatty acid, coco fattyacid, soya fatty acid, mixtures of these acids, etc. Stearic acid andmixed fatty acids, e.g. stearic acid/palmitic acid, are preferred.

[0026] The nonionic surfactants which are used in the instant cleaningcomposition are selected from the group of an aliphatic ethoxylatednonionic surfactant and an aliphatic ethoxylated/propoxylated nonionicsurfactant and mixtures thereof.

[0027] The water soluble aliphatic ethoxylated nonionic surfactantsutilized in this invention are commercially well known and include theprimary aliphatic alcohol ethoxylates and secondary aliphatic alcoholethoxylates. The length of the polyethenoxy chain can be adjusted toachieve the desired balance between the hydrophobic and hydrophilicelements.

[0028] The nonionic surfactant class includes the condensation productsof a higher alcohol (e.g., an alkanol containing about 8 to 16 carbonatoms in a straight or branched chain configuration) condensed withabout 4 to 20 moles of ethylene oxide, for example, lauryl or myristylalcohol condensed with about 16 moles of ethylene oxide (EO), tridecanolcondensed with about 6 to 15 moles of EO, myristyl alcohol condensedwith about 10 moles of EO per mole of myristyl alcohol, the condensationproduct of EO with a cut of coconut fatty alcohol containing a mixtureof fatty alcohols with alkyl chains varying from 10 to about 14 carbonatoms in length and wherein the condensate contains either about 6 molesof EO per mole of total alcohol or about 9 moles of EO per mole ofalcohol and tallow alcohol ethoxylates containing 6 EO to 11 EO per moleof alcohol.

[0029] A preferred group of the foregoing nonionic surfactants are theNeodol ethoxylates (Shell Co.), which are higher aliphatic, primaryalcohol containing about 9-15 carbon atoms, such as C₉-C₁₁ alkanolcondensed with 4 to 10 moles of ethylene oxide (Neodol 91-8 or Neodol91-5), C₁₂₋₁₃ alkanol condensed with 6.5 moles ethylene oxide (Neodol23-6.5), C₁₂₋₁₅ alkanol condensed with 12 moles ethylene oxide (Neodol25-12), C₁₄₋₁₅ alkanol condensed with 13 moles ethylene oxide (Neodol45-13), and the like. Such ethoxamers have an HLB (hydrophobiclipophilic balance) value of about 8 to 15 and give good O/Wemulsification, whereas ethoxamers with HLB values below 7 contain lessthan 4 ethyleneoxide groups and tend to be poor emulsifiers and poordetergents.

[0030] Additional satisfactory water soluble alcohol ethylene oxidecondensates are the condensation products of a secondary aliphaticalcohol containing 8 to 18 carbon atoms in a straight or branched chainconfiguration condensed with 5 to 30 moles of ethylene oxide. Examplesof commercially available nonionic detergents of the foregoing type areC₁₁-C₁₅ secondary alkanol condensed with either 9 EO (Tergitol 15-S-9)or 12 EO (Tergitol 15-S-12) marketed by Union Carbide.

[0031] One of the water soluble nonionic surfactants which can beutilized in this invention are an aliphatic ethoxylated/propoxylatednonionic surfactants which are depicted by the formula:

[0032] or

[0033] wherein R is a branched chain alkyl group having about 10 toabout 16 carbon atoms, preferably an isotridecyl group and x and y areindependently numbered from 1 to 20. A preferredethoxylated/propoxylated nonionic surfactant is Plurafac® 300manufactured by BASF.

[0034] The water-soluble zwitterionic surfactant, which can also be usedprovides good foaming properties and mildness. The zwitterionicsurfactant is a water soluble betaine having the general formula:

[0035] wherein R₁ is an alkyl group having 10 to 20 carbon atoms,preferably 12 to 16 carbon atoms, or the amido radical:

[0036] wherein R is an alkyl group having 9 to 19 carbon atoms and a isthe integer 1 to 4; R₂ and R₃ are each alkyl groups having 1 to 3carbons and preferably 1 carbon; R₄ is an alkylene or hydroxyalkylenegroup having from 1 to 4 carbon atoms and, optionally, one hydroxylgroup. Typical alkyldimethyl betaines include decyl dimethyl betaine or2-(N-decyl-N, N-dimethyl-ammonia) acetate, coco dimethyl betaine or2-(N-coco N, N-dimethylammonio) acetate, myristyl dimethyl betaine,palmityl dimethyl betaine, lauryl diemethyl betaine, cetyl dimethylbetaine, stearyl dimethyl betaine, etc. The amidobetaines similarlyinclude cocoamidoethylbetaine, cocoamidopropyl betaine and the like. Apreferred betaine is coco (C₈-C₁₈) amidopropyl dimethyl betaine.

[0037] Amine oxide semi-polar nonionic surfactants comprise compoundsand mixtures of compounds having the formula:

[0038] wherein R₁ is an alkyl, 2-hydroxyalkyl, 3-hydroxyalkyl, or3-alkoxy-2-hydroxypropyl radical in which the alkyl and alkoxy,respectively, contain from 8 to 18 carbon atoms, R₂ and R₃ are eachmethyl, ethyl, propyl, isopropyl, 2-hydroxyethyl, 2-hydroxypropyl, or3-hydroxypropyl, and n is from 0 to 10. Particularly preferred are amineoxides of the formula:

[0039] wherein R₁ is a C₁₂₋₁₆ alkyl and R₂ and R₃ are methyl or ethyl.The above ethylene oxide condensates, amides, and amine oxides are morefully described in U.S. Pat. No. 4,316,824 which is hereby incorporatedherein by reference.

[0040] The alkyl polysaccharides surfactants, which can be used have ahydrophobic group containing from about 8 to about 20 carbon atoms,preferably from about 10 to about 16 carbon atoms, most preferably fromabout 12 to about 14 carbon atoms, and polysaccharide hydrophilic groupcontaining from about 1.5 to about 10, preferably from about 1.5 toabout 4, most preferably from about 1.6 to about 2.7 saccharide units(e.g., galactoside, glucoside, fructoside, glucosyl, fructosyl; and/orgalactosyl units). Mixtures of saccharide moieties may be used in thealkyl polysaccharide surfactants. The number x indicates the number ofsaccharide units in a particular alkyl polysaccharide surfactant. For aparticular alkyl polysaccharide molecule x can only assume integralvalues. In any physical sample of alkyl polysaccharide surfactants therewill be in general molecules having different x values. The physicalsample can be characterized by the average value of x and this averagevalue can assume non-integral values. In this specification the valuesof x are to be understood to be average values. The hydrophobic group(R) can be attached at the 2-, 3-, or 4-positions rather than at the1-position, (thus giving e.g. a glucosyl or galactosyl as opposed to aglucoside or galactoside). However, attachment through the 1-position,i.e., glucosides, galactoside, fructosides, etc., is preferred. In thepreferred product the additional saccharide units are predominatelyattached to the previous saccharide unit's 2-position. Attachmentthrough the 3-, 4-, and 6-positions can also occur. Optionally and lessdesirably there can be a polyalkoxide chain joining the hydrophobicmoiety (R) and the polysaccharide chain. The preferred alkoxide moietyis ethoxide.

[0041] Typical hydrophobic groups include alkyl groups, either saturatedor unsaturated, branched or unbranched containing from about 8 to about20, preferably from about 10 to about 18 carbon atoms. Preferably, thealkyl group is a straight chain saturated alkyl group. The alkyl groupcan contain up to 3 hydroxy groups and/or the polyalkoxide chain cancontain up to about 30, preferably less than about 10, alkoxidemoieties.

[0042] Suitable alkyl polysaccharides are decyl, dodecyl, tetradecyl,pentadecyl, hexadecyl, and octadecyl, di-, tri-, tetra-, penta-, andhexaglucosides, galactosides, lactosides, fructosides, fructosyls,lactosyls, glucosyls and/or galactosyls and mixtures thereof.

[0043] The alkyl monosaccharides are relatively less soluble in waterthan the higher alkyl polysaccharides. When used in admixture with alkylpolysaccharides, the alkyl monosaccharides are solubilized to someextent. The use of alkyl monosaccharides in admixture with alkylpolysaccharides is a preferred mode of carrying out the invention.Suitable mixtures include coconut alkyl, di-, tri-, tetra-, andpentaglucosides and tallow alkyl tetra-, penta-, and hexaglucosides.

[0044] The preferred alkyl polysaccharides are alkyl polyglucosideshaving the formula

R₂O(C_(n)H2n O)r(Z)_(x)

[0045] wherein Z is derived from glucose, R is a hydrophobic groupselected from the group consisting of alkyl, alkylphenyl,hydroxyalkylphenyl, and mixtures thereof in which said alkyl groupscontain from about 10 to about 18, preferably from about 12 to about 14carbon atoms; n is 2 or 3 preferably 2, r is from 0 to 10, preferable 0;and x is from 1.5 to 8, preferably from 1.5 to 4, most preferably from1.6 to 2.7. To prepare these compounds a long chain alcohol (R₂OH) canbe reacted with glucose, in the presence of an acid catalyst to form thedesired glucoside. Alternatively the alkyl polyglucosides can beprepared by a two step procedure in which a short chain alcohol (R₁OH)can be reacted with glucose, in the presence of an acid catalyst to formthe desired glucoside. Alternatively the alkyl polyglucosides can beprepared by a two step procedure in which a short chain alcohol (C₁₋₆)is reacted with glucose or a polyglucoside (x=2 to 4) to yield a shortchain alkyl glucoside (x=1 to 4) which can in turn be reacted with alonger chain alcohol (R₂OH) to displace the short chain alcohol andobtain the desired alkyl polyglucoside. If this two step procedure isused, the short chain alkylglucosde content of the final alkylpolyglucoside material should be less than 50%, preferably less than10%, more preferably less than about 5%, most preferably 0% of the alkylpolyglucoside.

[0046] The amount of unreacted alcohol (the free fatty alcohol content)in the desired alkyl polysaccharide surfactant is preferably less thanabout 2%, more preferably less than about 0.5% by weight of the total ofthe alkyl polysaccharide. For some uses it is desirable to have thealkyl monosaccharide content less than about 10%.

[0047] The used herein, “alkyl polysaccharide surfactant” is intended torepresent both the preferred glucose and galactose derived surfactantsand the less preferred alkyl polysaccharide surfactants. Throughout thisspecification, “alkyl polyglucoside” is used to include alkylpolyglycosides because the stereochemistry of the saccharide moiety ischanged during the preparation reaction.

[0048] An especially preferred APG glycoside surfactant is APG 625glycoside manufactured by the Henkel Corporation of Ambler, Pa. APG25 isa nonionic alkyl polyglycoside characterized by the formula:

C_(n)H_(2n+1)O(C₆H₁₀O₅)_(x)H

[0049] wherein n=10 (2%); n=122 (65%); n=14 (21-28%); n=16 (4-8%) andn=18 (0.5%) and x (degree of polymerization)=1.6. APG 625 has: a pH of 6to 10 (10% of APG 625 in distilled water); a specific gravity at 25° C.of 1.1 g/ml; a density at 25° C. of 9.1 lbs/gallon; a calculated HLB of12.1 and a Brookfield viscosity at 35C., 21 spindle, 5-10 RPM of 3,000to 7,000 cps.

[0050] The cleaning composition can also contain a mixture of a C₁₂₋₁₄alkyl monoalkanol amide such as lauryl monoalkanol amide and a C₁₂₋₁₄alkyl dialkanol amide such as lauryl diethanol amide or coco diethanolamide.

[0051] As used herein and in the appended claims the term “perfume” isused in its ordinary sense to refer to and include any non-water solublefragrant substance or mixture of substances including natural (i.e.,obtained by extraction of flower, herb, blossom or plant), artificial(i.e., mixture of natural oils or oil constituents) and syntheticallyproduced substance) odoriferous substances. Typically, perfumes arecomplex mixtures of blends of various organic compounds such asalcohols, aldehydes, ethers, aromatic compounds and varying amounts ofessential oils (e.g., terpenes) such as from 0% to 80%, usually from 10%to 70% by weight, the essential oils themselves being volatileodoriferous compounds and also serving to dissolve the other componentsof the perfume.

[0052] In the present invention the precise composition of the perfumeis of no particular consequence to cleaning performance so long as itmeets the criteria of water immiscibility and having a pleasing odor.Naturally, of course, especially for cleaning compositions intended foruse in the home, the perfume, as well as all other ingredients, shouldbe cosmetically acceptable, i.e., non-toxic, hypoallergenic, etc.

[0053] The cleaning composition can contain 0.1 wt. % to 50 wt. % of atleast one solubilizing agent selected from the group consisting of aC₂₋₅ mono, dihydroxy or polyhydroxy alkanols such as ethanol,isopropanol, glycerol ethylene glycol, diethylene glycol, propyleneglycol, and hexylene glycol and mixtures thereof, urea, and alkali metalcumene or xylene sulfonates such as sodium cumene sulfonate and sodiumxylene sulfonate.

[0054] The cleaning composition of this invention may, if desired, alsocontain other components either to provide additional effect or to makethe product more attractive to the consumer. The following are mentionedby way of example: Colors or dyes in amounts up to 0.5% by weight; pHadjusting agents, such as sulfuric acid or sodium hydroxide, can be usedas needed.

[0055] The composition can optionally contain 0.05 wt. % to 6 wt. % of acomposition selected from the group consisting of a proton donatingagent such as alpha hydroxy acid such as lactic or citric acid, anantibacterial agent, hydrogen peroxide or an organic peroxide.Additionally, the composition can contain moisturizers, embollients,organic and/or inorganic builders, bleaching agents and/or fabricsoftening agents.

[0056] Preservatives which can be used in the instant compositions at aconcentration of 0.005 wt. % to 3 wt. %, more preferably 0.01 wt. % to2.5 wt. % are: benzalkonium chloride; benzethoniumchloride,5-bromo-5-nitro-1,3dioxane; 2-bromo-2-nitropropane-1,3-diol;alkyl trimethyl ammonium bromide; N-(hydroxymethyl)-N-(1,3-dihydroxymethyl-2,5-dioxo-4-imidaxolidinyl-N′-(hydroxy methyl) urea;1-3-dimethyol-5,5-dimethyl hydantoin; formaldehyde; iodopropynl butylcarbamata, butyl paraben; ethyl paraben; methyl paraben; propyl paraben,mixture of methyl isothiazolinone/methyl-chloroisothiazoline in a 1:3wt. ratio; mixture of phenoxythanol/butyl paraben/methylparaben/propylparaben; 2-phenoxyethanol;tris-hydroxyethyl-hexahydrotriazine; methylisothiazolinone;5-chloro-2-methyl-4-isothiazolin-3-one; 1,2-dibromo-2,4-dicyanobutane;1-(3-chloroalkyl)-3,5,7-triaza-azoniaadamantane chloride; and sodiumbenzoate. PH adjusting agents such as sulfuric acid or sodium hydroxidecan be used as needed.

[0057] The cellulosic polymer which is used in the cleaning compositionis selected from the group consisting of methyl cellulose and hydroxypropyl methyl cellulose Dow Chemical manufactures these cellulosicpolymers under the tradename Methocel. The following chart set forthsuitable Methocel polymer useful in the instant invention. MethoxylHydroxypropyl Hydroxy- degree of Methoxyl degree of propyl substitution(%) substitution (%) Methocel A 1.8 30 — — Methocel E 1.9 29 0.23 8.5Methocel F 1.8 28 0.13 5.0 Methocel J 1.3 18 0.82 27 Methocel K 1.4 220.21 8.1 Methocel 310 2.0 25 0.8 25 Series

[0058] The cellulosic polymer acts to regulate and slow the release ofthe cleaning composition from the water insoluble substrate.

[0059] The cleaning composition is made by preparing aqueous surfactantsolution and a aqueous polymeric solution of the cellulosic polymer at a12 wt. % to 18 wt. % of the cellulosic polymer. The surfactantcomposition solution and the polymeric solution are mixed by simplemixing at room temperature in a 4:1 to 1:4 weight ratio to form thecleaning solution which is to impregnate the water insoluble substrate.

[0060] The bottom and top layers may have different textures andabrasiveness. Differing textures can result from the use of differentcombinations of materials or from the use of different manufacturingprocesses or a combination thereof. A dual texture substrate can be madeto provide the advantage of a more abrasive side for cleaning difficultto remove soils. A softer side can be used for more delicate or lesssoiled surfaces. The substrate should not dissolve or break apart inwater. It is the vehicle for delivering the cleaning composition todishware, flatware, pots and pans. Use of the substrate enhanceslathering, cleaning and grease removal.

[0061] A wide variety of materials can be used as the substrate. Itshould have sufficient wet strength, abrasivity, loft and porosity.Examples include, non woven substrates, wovens substrates,hydroentangled substrates and sponges.

[0062] Examples of suitable non woven water insoluable substratesinclude, 100% cellulose Wadding Grade 1804 from Little RapidsCorporation, 100% polypropylene needlepunch material NB 701-2.8-W/R fromAmerican Non-wovens Corporation, a blend of cellulosic and syntheticfibres-Hydraspun 8579 from Ahlstrom Fibre Composites, and &0%Viscose/30% PES Code 9881 from PGI Nonwovens Polymer Corp.

[0063] Another useful substrate is manufactured by Jacob Holm-LidroRough'n Soft. It is a composition material comprising a 65/35 viscoserayon/polyester hydroentangled spunlace layer with a hydroenlongatedbonded polyeser scribbly layer.

[0064] Still another useful substrate is manufactured by Texel. It is acomposite material manufactured from a top layer of coarse fiber 100%polypropylene needlepunch, a center layer of an absorbent cellulose coreand a bottom layer of a fine fiber polyester layer needlepunchedtogether. The polypropylene layer can range from 1.5 to 3.5 oz/sq. yd.The cellulose core is a didn't we hear that the use of the word “crepe”brings problems—or is that just saying “crepe paper” and not “crepedpaper”? paper layer ranging from 0.5 to 2 oz./sq. yd. The fine fiberpolyester layer can range from 0.5 to 2 oz./sq. yd. At least 50 wt. % ofthe impregnated cleaning composition is contained within the cleaningcellulose core layer.

[0065] The product of the present invention comprising mutliple layersmay be ultrasonically bonded with appropriate choice of materials afterapplying the coating of one or more of the layers. Alternatively layersmay be bonded together by needlepunch, mechanical means such as sewing,thermal bonding, chemical bonding, or sonic bonding prior toimpregnation.

[0066] The following examples illustrate liquid cleaning compositions ofthe described invention. Unless otherwise specified, all percentages areby weight. The exemplified compositions are illustrative only and do notlimit the scope of the invention. Unless otherwise specified, theproportions in the examples and elsewhere in the specification are byweight.

EXAMPLE 1

[0067] The following cleaningcomposition (in wt. %) was prepared bysimple batch mixing at room temperature. Then, cellulosic core layer wasimpregnated with the cleaning composition at a rate of 15.9 grams per100 square inches of cellulose core. The cellulose core is Wadding Grade1804 made by Little Rapids Corporation. The impregnated cellulosic corewas sandwiched between a coarse fiber 100% polypropylene layer and afine fiber polyester layer. The three layers were joined together bysewing. A Part I Ethanol 33.0 Sodium linear alkyl benzene sulfonate 23.6Methyl cellulosic polymer 1.4 Water Bal. Part 1 Formula A 1 Three layercomposite substrate 1

[0068] While particular embodiments of the invention and the best modecontemplated by the inventors for carrying out the invention have beenshown, it will be understood, of course, that the invention is notlimited thereto since modifications may be made by those skilled in theart, particularly in light of the foregoing teachings. It is, therefore,contemplated by the appended claims to cover any such modifications asincorporate those features which constitute the essential features ofthese improvements within the true spirit and scope of the invention.

What is claimed:
 1. A cleaning wipe which comprises approximately byweight: (a) 20% to 95% of a water insoluble substrate which comprises atop layer of coarse fibers, an absorbent center layer, and a bottomlayer of fine fibers, wherein the three layers are bonded together; and(b) 5% to 80% of a cleaning composition which comprises approximately byweight: (i) 0.5% to 12% of a water soluble cellulosic polymer selectedfrom the group consisting of methyl cellulose and hydroxypropyl methylcellulose and mixtures thereof; and (ii) 15% to 50% of at least onesurfactant selected from the group consisting of alkali metal salts of afatty acid ethoxylated nonionic surfactants, amine oxide surfactants,alkyl polyglucoside surfactants, zwitterionic surfactants, anionicsurfactants and C₁₂-C₁₄ fatty acid monoalkanol amides and mixturesthereof; and (iii) the balance being water, wherein only the centerabsorbent layer is impregnated with said cleaning composition and thewipe is not moist and the composition does not contain potassiumsorbate, a polysaccharide polymer, a polycarboxylate polymer, polyvinylalcohol polymer, polyvinylpyrrolidone polymer or methyl vinyl etherpolymer.
 2. A wipe according to claim 1 wherein said cleaningcomposition further includes 0.1 wt. % to 50 wt. % of at least onesolubilizing agent.
 3. A wipe according to claim 2 wherein saidsolubilizing agent is a C₂-C₅ alkanol.
 4. A wipe according to claim 1wherein said cleaning composition further includes 0.1 wt. % to 1.5 wt.% of a perfume, essential oil or a water insoluble organic compound. 5.A wipe according to claim 1 further including a compound selected fromthe group consisting of a proton donating agent, an antibacterial agent,an organic peroxide, hydrogen peroxide, moisturizers, embollients,organic builders, inorganic builders and fabric softening agents,bleaching agents and mixtures thereof.